<template>
  <!-- 解决 商品价格闪烁的问题-->
  <view v-if="goods_info.goods_name" class="goods-detail-container">
  <!-- 轮播图区域 -->
 <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
   <swiper-item v-for="(item,index) in goods_info.pics" :key="index" @click="preview(index)">
    <image :src="item.pics_big"></image>
   </swiper-item>
 </swiper>
 <!-- 商品信息区域 -->
 <view class="goods-info-box">
   <!-- 商品价格 -->
   <view class="price">¥{{goods_info.goods_price}}</view>
   <!-- 商品信息主题区域 -->
   <view class="goods-info-body">
     <!-- 商品的名字 -->
     <view class="goods-name">{{goods_info.goods_name}}</view>
     <!-- 收藏 -->
     <view class="favi">
       <uni-icons type="star" size="18" color="gray"></uni-icons>
       <text>收藏</text>
     </view>
   </view>
    <!-- 运费 -->
    <view class="yf">快递:免运费</view>
 </view>
 
 <rich-text :nodes="goods_info.goods_introduce"></rich-text>
 
 <!-- 商品导航组件区域-->
 <view class="goods-nav">
   <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick"></uni-goods-nav>
 </view>
   </view>
</template>

<script>
  import {mapState,mapMutations,mapGetters} from 'vuex'
  export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total'])
    },
   watch:{
     // total(newValue){
     //   const result = this.options.find(x=>x.text==='购物车')
     //     if(result){
     //       result.info = newValue
     //   }
     // }
     total:{
      handler(newValue){
          const result = this.options.find(x=>x.text==='购物车')
            if(result){
              result.info = newValue
          }
      },
       // 页面一加载就调用
       immediate:true
     }
   },
    data() {
      return {
        goods_info:{},
        options:[{
          icon:'shop',
          text:'店铺',
           backgroundColor:'#ff0000',
           color:"#fff"
        },{
          icon:'cart',
          text:'购物车',
          info:0
        }],
        buttonGroup:[{
          text:'加入购物车',
          backgroundColor:'#ff0000',
          color:"#fff"
        },{
          text:'立即购买',
          backgroundColor:'#ffa200',
          color:'#fff'
        }]
      };
    },
    methods:{
      ...mapMutations('m_cart',['addToCart']),
      getGoodsDetail(goods_id){
        uni.request({
          url:'https://api-hmugo-web.itheima.net/api/public/v1/goods/detail?goods_id=395',
          method:'GET',
          data:{
            goods_id
          },
          success:(res)=>{
            // 取消图片的默认间距并且把webp图片格式转化为jpg格式
           res.data.message.goods_introduce=res.data.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
          this.goods_info = res.data.message
          }
        })
      },
      preview(index){
        uni.previewImage({
          // 预览时,默认显示当前图片的索引
          currentIndex:index,
          urls:this.goods_info.pics.map(value=>value.pics_big)
        })
      },
     onClick(e){
       if(e.content.text==='购物车'){
         uni.switchTab({
           url:'/pages/cart/cart'
         })
       }
     },
     buttonClick(e){
   if(e.content.text==='加入购物车'){
     const goods={
       goods_id:this.goods_info.goods_id,
       goods_name:this.goods_info.goods_name,
       goods_price:this.goods_info.goods_price,
       goods_count:1,
       goods_small_logo:this.goods_info.goods_small_logo,
       goods_state:true
     }
     // 调用addToCart方法
     this.addToCart(goods)
   }
     }
    },
    onLoad(options) {
     const goods_id = options.goods_id
     this.getGoodsDetail(goods_id)
    }
  }
</script>

<style lang="scss">
swiper{
  width: 750rpx;
  image{
    width: 100%;
    height: 100%;
  }
}
.goods-info-box{
  padding: 10px;
  padding-right: 0;
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
.goods-nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detail-container{
  padding-bottom: 50px;
}
</style>
